What to do when you've made an enemy on your own side? Good thing there is a convenient battle coming up... What's one more casualty between friends? The coroner will never know the difference. Shoot the guy yourself or push him into enemy fire, it makes little difference. Nobody's going to check. That annoying squadmate or sergeant is dead, and you can now resume shooting the enemy like nothing wrong happened. Even if someone recognizes that it was your side's ammunition, Friend or Foe might have happened; even if someone knows you shot him, you can feign bewilderment, claiming in a Friend or Foe situation you made a terrible but understandable mistake -- sometimes.